BI COMB SGM LP/HP

Mechanical furnace screw feed, designed together with the boiler.

Two-stage combustion, with grate-level gasification and a wide range of primary air/secondary air ratios according to the type of fuel used. Secondary air injected by independent high-turbulence system.

Very wide and high combustion chamber, partially cooled, for the correct duration of the hot flue gas at temperatures varying between 1,100 and 1,300°C, depending on the fuel used.

Upper post-combustion chamber, with high turbulence, thanks to the special secondary air injection system.

High-quality mixed cast and brick refractory cladding according to the zone (AL2O3>62%), with the possibility of specific refractory cladding for special fuels.

Tube bundle and shape of flue gas path guarantees minimum cleaning operations and complete accessibility and complete access, with efficiency exceeding 90%.

Reduced specific heat loads at the furnace.

Completely tubular structure.

Lower water content, therefore less thermal inertia and greater rapidity in reaching steady operating conditions.

Less dangerous in the event of leaks or explosions.

CERTIFICATION

• CE Mark in accordance with following Directives machinery:
• (2006/42 EEC)
• Low Voltage (2014/35/UE)
• Electromagnetic Compatibility (2014/30/UE)
• Pressure Equipment (2014/68/UE)

ACCESSORIES AVAILABLE ON REQUEST

Self-cleaning boiler bed: ensures automatic cleaning of most of the ash produced during combustion and simplifies boiler cleaning operations. The ash is conveyed to two specific collection points where it can be kept in special containers (ordered separately).

This option, combined with the shockwave cleaning system, drastically reduces unit downtime.

Continuous heat output modulation: allows the heat input to be reduced continuously from 100% to 50% minimising the number of boiler shut-downs. A programmable logic controller connected to the water outlet temperature probe varies the rotation speeds respectively of the fuel feed screw and the combustion air fans using inverters.

Draught regulator: this keeps the draught in the combu-stion chamber constant, using a sensor device and a motor-driven throttle valve on the centrifugal dust separator assembly bypass duct or the flue gas exhaust inverter.

Ignition or pilot burner: allows automatic initial ignition of the fuel (essential for materials with a high moisture content), single flame, operating on oil or natural gas. A pneumatic system automatically controls its entry into and return out of the boiler.

Analyser with continuous control: reading on display of CO - O2, flue gas temperature (required by legislation for heat outputs exceeding 1 MW).

“Trend View” system for recording data on flue gas emissions: software for continuous data acquisition. The data can be processed the data in table form (as required by certain legislation).

SBS shockwave cleaning system: the system is made up of a series of shockwave blowers fitted on the boiler structure, and a timer. The residual dust from combustion removed from the tube bundle is carried by the flue gas and decants in the filtration system downstream of the boiler. The system works with the boiler operating.

Flue gas recirculation in the combustion chamber for NOx reduction: the system allows combustion to occur at a constant and lower temperature than combustion without recirculation.

COMPATIBLE FUEL TYPES

Waste from the first and second processing of untreated wood and cork.

Biomass (plant waste from agricultural and forestry activities and from the first processing of agricultural and food products, depleted pomace, grape seed, grape seed flour, fruit residues, peels and other plant residues).

Wood pellets.

Treated wood processing scrap and similar material (glued particleboard or multiply finished with resins of the type and in the quantity admissible according to legislation on waste reuse). Minimum temperature of softened ash: 800°C.

Maximum percentage of ash in dry fuel: 4%.

MAXIMUM GRAIN SIZE ALLOWED, FUEL MOISTURE CONTENT, GUARANTEES ON THE COMBUSTION PROCESS AND EMISSIONS, will be defined contractually, based on specific requirements